I feel like I am coming from a weak position, again, asking for co-parenting with my W. She has already stated that d16 has the right to be where she chooses to. She and d16 spend 95+% of d16's free time together. Why is it good for d16 to be with me also - what benefit does it bring her? Sure, I can take her on some trips, and help with math and scientific school stuff, but is there something beyond that?